Preheat your oven to 400°F (200°C).
In a large mixing bowl, combine ground chicken, ricotta cheese, chopped spinach, Parmesan cheese, egg, minced garlic, oregano, basil, salt, and pepper.
Mix the ingredients thoroughly using your hands or a spatula.
If the mixture seems too wet, add breadcrumbs gradually until you reach a consistency that allows you to form meatballs.
Form the mixture into meatballs, about 1.5 inches in diameter. You should get approximately 20-24 meatballs.
Lightly grease a baking sheet with olive oil.
Place the meatballs on the prepared baking sheet, leaving some space between each one.
Brush the tops of the meatballs lightly with olive oil for a golden finish.